| 发明名称 |
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| 摘要 |
One of the routes to prepare optically active 2-(4-aryloxphenoxy)propionic acid ester herbicide is to couple optically active 2-(4-hydrophenoxy)propionic acid esters with halogenated aromatic or heteroaromatic compound. Conversion of the optically active 2-(4-hydroxyphenoxy)propionic acid ester into the acid salt prior to the coupling step effectively prevents the racemization that unexpectedly occurs otherwise. |
| 申请公布号 |
JP2878360(B2) |
申请公布日期 |
1999.04.05 |
| 申请号 |
JP19890506598 |
申请日期 |
1989.05.31 |
| 申请人 |
DAU AGUROSAIENSU ERU ERU SHII |
发明人 |
KAASHUNAA RARII DEII;TAI JIMII JEI |
| 分类号 |
C07D277/20;A01N39/00;A01N39/02;A01N43/40;A01N43/60;A01N43/76;A01N43/78;A01P13/00;C07B53/00;C07C59/68;C07C67/00;C07C67/343;C07C69/712;C07C69/734;C07C205/38;C07C253/30;C07C255/54;C07D213/64;C07D213/643;C07D241/44;C07D263/58;C07D265/36;C07D277/34;(IPC1-7):C07C69/734 |
主分类号 |
C07D277/20 |
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